Payment or invoice problems are usually caused by missing links, incorrect statuses, or partial data entry.
📌 Screenshot: [Invoice error example placeholder]
Common errors and solutions
Error message / situation | Cause | How to fix |
“Cannot invoice: no active services selected” | No service lines ticked when creating an invoice. | Select at least one service and try again. |
Invoice total = 0 EUR | Prices missing on one or more services. | Check each service for a valid client price. |
Payment not showing as received | Payment not registered or wrong type. | Add payment manually in the Payments tab. |
Duplicate invoice numbers | Recreated file without crediting previous invoice. | Credit the old invoice before generating a new one. |
Cannot credit invoice | Linked Travel Agreement already cancelled. | Reactivate or ask Admin to unlock temporarily. |
💡 Tip: When reporting issues, always include the file number and invoice ID — Admin can locate it faster.